Snowboard boot



3.1 is a left side view of a snowboard boot;

3.2 is a right side view thereof;

3.3 is a front view thereof;

3.4 is a back view thereof;

3.5 is a top view thereof;

3.6 is a bottom view thereof;

3.7 is a left perspective view thereof; and

3.8 is a right perspective view thereof.

The broken lines in the figures depict portions of a snowboard boot and form no part of the claim. 

CLAIM The ornamental design for a snowboard boot, as shown and described. 